ISSN 2070-7401 (Print), ISSN 2411-0280 (Online)
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa


Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2018, Vol. 15, No. 1, pp. 282-295

Investigation of the atmospheric boundary layer dynamics over the Laptev Sea coastal polynya using WRF modelling

I.A. Repina 1, 2 , A.A. Aniferov 1 
1 A.M. Obukhov Institute of Atmospheric Physics RAS, Moscow, Russia
2 Space Research Institute RAS, Moscow, Russia
Accepted: 31.12.2017
DOI: 10.21046/2070-7401-2018-15-1-282-295
Using the mesoscale model WRF Polar, atmospheric processes were studied over the polynyas of the Laptev Sea. In the paper the case of polynyas formation in April – May 2008 in the Laptev Sea was considered. Comparison of model experiments with different ice concentration data was performed: in one case the dynamics of the atmospheric boundary layer was simulated at 100 % ice concentration, in the other case real ice concentration was taken from satellite data. Cold and warm periods, when the temperature contrast between the water and the air was small, were considered. Model experiments were conducted on a grid of 10; 5 and 3 km, which allowed us to consider the effect of horizontal resolution on the accuracy of the experiment. The influence of polynya on the temperature, wind speed and cloud formation over the polynya was established. The degree of influence depends on the synoptic conditions in the region and decreases with the increase in cyclonic activity.
Keywords: Arctic climate, polynyas and leads, remote sensing, atmospheric boundary layer, mesoscale modelling
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